65.0.17.32/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
65.0.17.32
Broadcast Address
65.0.17.63
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
65.0.17.33
Last Usable IP
65.0.17.62
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (65.0.17.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 65.0.17.63 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 65.0.17.32/27
Network Address 65.0.17.32
Broadcast Address 65.0.17.63
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class A
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 65.0.17.33
Last Usable IP 65.0.17.62
Network (Hex) 0x41001120
Broadcast (Hex) 0x4100113F
Address Type Public / Globally Routable

Binary Representation

Network Address
01000001.00000000.00010001 01000001.00000000.00010001.00100000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 65.0.17.32/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 65.0.17.32/28 65.0.17.32 65.0.17.33 65.0.17.46 65.0.17.47 14
2 65.0.17.48/28 65.0.17.48 65.0.17.49 65.0.17.62 65.0.17.63 14

IP Address Sample

Showing first 16 of 32 total IPs.

65.0.17.32 net
65.0.17.33
65.0.17.34
65.0.17.35
65.0.17.36
65.0.17.37
65.0.17.38
65.0.17.39
65.0.17.40
65.0.17.41
65.0.17.42
65.0.17.43
65.0.17.44
65.0.17.45
65.0.17.46
65.0.17.47
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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